: At least 4 GB (ArcMap is a 32-bit application and hits a hard 4 GB ceiling), but 16 GB is highly recommended for multi-tasking OS functions.
Do not confuse this with ArcGIS Pro . Pro is a modern, 64-bit application. ArcGIS 10.8 is 32-bit. Installing both on the same machine is possible, but they operate independently.
First, a clarification. The search term is shorthand for ArcGIS 10.8 . Esri’s naming convention uses a decimal (e.g., 10.1, 10.2, 10.8). When users omit the decimal, search engines still group these terms. You are not installing a version "108" but rather version 10.8 or 10.8.1 (the final patch).
Here’s a concise review of the search query — based on common user experiences and technical context.
